Induced emf in a straight segment of wire that passes through a magnetic field depends on all of the following, except:

A. the orientation of the wire with respect to the magnetic field direction
B. its length, its resistance
C. its speed
D. the magnetic field strength


B. its length, its resistance

Physics & Space Science

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Consider two copper wires. One has twice the length of the other. How do the resistances of these two wires compare?

A) Both wires have the same resistance. B) The longer wire has half the resistance of the shorter wire. C) The longer wire has twice the resistance of the shorter wire. D) none of the given answers

Physics & Space Science

The fastest we could accelerate a vehicle powered with an ion engine to is approximately

A) 1% of the speed of light B) 0.001% of the speed of light C) 0.1% of the speed of light D) 10% of the speed of light

Physics & Space Science

A thin-walled cylindrical tank with a diameter of 2.0 m and wall thickness of 18 mm is open at the top. The height h of water (weight density 5 9.81 kN/m3) in the tank at which the circumferential stress reaches 10 MPa in the tank wall is approximately:

(A) 14 m
(B) 18 m
(C) 20 m
(D) 24 m

Physics & Space Science

Why do some radio galaxies appear to have lobes while some do not?

What will be an ideal response?

Physics & Space Science